Transition to Official Go Implementation

[erikist]

https://github.com/orgs/modelcontextprotocol/discussions/224#discussioncomment-12730162 -- looks like the Go team is working on creating an official MCP implementation -- we will need to transition that when they are ready. Nothing is out yet, though

[erikist]

https://pkg.go.dev/golang.org/x/tools/internal/mcp#pkg-index

[erikist]

Going to create a long term release branch for this -- official-go-mcp